<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>promise_面试题</title>
</head>
<body>
<!-- 面试题4 -->
<script type="text/javascript">
  setTimeout(() => {
    console.log("0")
  }, 0)

  new Promise((resolve,reject)=>{
    console.log("1")
    resolve()
  }).then(()=>{        
    console.log("2")
    new Promise((resolve,reject)=>{
      console.log("3")
      resolve()
    }).then(()=>{      
      console.log("4")
    }).then(()=>{       
      console.log("5")
    })
  }).then(()=>{  
    console.log("6")
  })

  new Promise((resolve,reject)=>{
    console.log("7")
    resolve()
  }).then(()=>{         
    console.log("8")
  })

</script>

</body>
</html>